Name the principal axial muscles of the body and describe their origins, insertions, actions, and innervations.
Name the principal appendicular muscles of the body and describe their origins, insertions, actions, and innervations.
Compare and contrast the major muscle groups of the upper and lower limbs and relate their similarities and differences to their function. With over 700 muscles in the body, it can be hard to try to remember every single one. To aide us in this process there are ways to become more familiar and to help make these muscles more identifiable. There are at least 7 ways to do this. By having descriptive portion included in the muscle name is the major way of aiding one. This can be done by including the Location within the body, origin and insertion points, fascicle organization. The relative positions, structural characteristics and action. When using location in the body there may be a term included that is associated with a specific body region. At times a muscle may be so prominent that the name of the body region alone can identify it. Orbicularis occuli ---we know its in the eye region cause of occuli.
Origin and insertion is when muscles include terms for the part of the body specific to there origin and location one part orgin and second part the insertion. Names may be long and difficult to pronounce. Illiocostalis thoracis is an example illium and ribs in the thoracic cavity. Fascicle Organization is like the appearance the rectus abdominis which in the muscle located in our abs. There is a descriptive term of the muscle appearance and also a location name rectus means straight and abdo lets us know that it is in the abdominal region. Muscle positioning also known as Relative Position is a way where there is a term attached to exact positioning. For example externus for visible at the body surface or superficialis. Deeper muscles are termed
References: Martini, FH (2009). Fundamentals of Anatomy and Physiology 8th edition